BIOLOGICAL DIVERSITY-4 Flashcards
What are some causes of reductions in Biological diversity?
Habitat destruction- construction, agriculture, herbicides and pesticides
Introduction of non-native species
Over hunting-invasive species
Define extinction
A species that no longer exists on the planet
Define Extirpation
A species no longer exists in a certain area, but lives elsewhere.
Define endangered
A species becoming close to extinction or extirpation
Define Threatened
A species likely to become endangered if conditions are not reversed
Define Special concern
A species under special concern because of a trait that makes the sensitive to human activity
What are some natural causes of reduction in biological diversity
Over-population
disease
overspecialization
Natural disasters
Define overspecialization
Species have adaptations to only a few environmental conditions which leave it venerable to extinction
Define artificial insemination
the injection of a male gamete into a female
Define genetic engineering
The changing of DNA of an organism
How does cloning work?
Cells are taken from plants, put in a solution of hormones and nutrients will develop into a seedling
What are some risks of biotechnology in animals
birth defects, death, etc.
What are some risks of biotechnology in plants
Crops cross with weeds so the weeds are resistant to herbicides
Define In-situ conservation
The maintenance of organisms withing their natural ecosystem
Define Ex-situ conservation
The maintenance of organisms outside their natural ecosystem and habitat
